Impact wrench



FIG. 1 is a left front perspective view of an impact wrench showing my new design.

FIG. 2 is a front view thereof.

FIG. 3 is a rear view thereof.

FIG. 4 is a right side view thereof.

FIG. 5 is a left-side view thereof.

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines and the areas within the broken lines form no part of the claimed design. 

The ornamental design for an impact wrench, as shown and described. 